How to Determine Correct Working Face

Figures 1 through 4 are intended to help you calculate the working face (F) for various thread rolling applications, determine the angle of chamfer required and position the thread roll properly.

The working face (or F dimension) of the thread roll must always be greater than the length of thread that needs to be generated on the part. The general rule is to allow the thread roll to overhang each end of the blank by at least 1 1⁄4 threads (root to root or crest to crest = 1 thread).

Whether you're ordering from our extensive in-stock inventory, or requesting custom-made materials, the thread rolls you get from CJWinter arrive quickly, perform at your exact specs, and last a long, long time.

How to Order Thread Rolls

When placing an order or requesting a quote, please have the following information available:

Make and model of thread rolling attachment

Style of thread roll (i.e. D-1, DR-1, C-1, etc.)

Size and pitch of thread to be rolled, including dimensional tolerances if other than standard

Length of thread on part

Material to be rolled

Print of part to be rolled

NOTE: Special rolls may require a sample part or more detailed specifications. Some rolls require a special calculation to figure the work face on the roll.